by Jayme Deerwester, USA TODAY

by Jayme Deerwester, USA TODAY

The No Doubt singer, 44, and husband Gavin Rossdale, 48, welcomed their third son on Friday.

Rossdale tweeted the news Saturday afternoon, along with the baby's name: Apollo Bowie Flynn. He was even so kind as to explain that Bowie is his mother Barbara's maiden name while Flynn is the maiden name of Stefani's mother, Patti.

Apollo joins big brothers Kingston, 7, and Zuma, 5.

The new arrival also brings the tally of New Doubt offspring to eight -- enough to challenge the Foo Fighters' kids a run for their money when it comes to trashing dressing rooms.